Methods and apparatus for control using control devices that provide a virtual machine environment and that communicate via an IP network

a virtual machine environment and control device technology, applied in the field of control systems, can solve the problems of increasing pressure and boiling activity, and less uniform command and operation of control devices, and achieve the effects of confusion, complexity and cost reduction, and removing incentives for product differentiation
US20080040477A1Inactive Publication Date: 2008-02-14SCHNEIDER ELECTRIC SYST USA INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SCHNEIDER ELECTRIC SYST USA INC
Publication Date
2008-02-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides improved methods and apparatus for control using field and control devices that provide a virtual machine environment and that communicate via an IP network. By way of non-limiting example, such field device can be an “intelligent” transmitter or actuator that includes a low power processor, along with a random access memory, a read-only memory, FlashRAM, and a sensor interface. The processor can execute a real-time operating system, as well as a Java virtual machine (JVM). Java byte code executes in the JVM to configure the field device to perform typical process control functions, e.g., for proportional integral derivative (PID) control and signal conditioning. Control networks can include a plurality of such field and control devices interconnected by an IP network, such as an Ethernet.
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Description

BACKGROUND OF THE INVENTION

[0001] This application claims the priority of the following United States Patent Applications: U.S. Patent Application Ser. No. 60 / 139,071, entitled OMNIBUS AND WEB CONTROL, filed Jun. 11, 1999; U.S. Patent Application Ser. No. 60 / 144,693, entitled OMNIBUS AND WEB CONTROL, filed Jul. 20, 1999; U.S. Patent Application Ser. No. 60 / 149,276, entitled METHODS AND APPARATUS FOR PROCESS CONTROL (“AUTOARCHITECTURE”), filed Aug. 17, 1999; U.S. patent application Ser. No. 09 / 345,215, entitled PROCESS CONTROL SYSTEM AND METHOD WITH IMPROVED DISTRIBUTION, INSTALLATION, AND VALIDATION OF COMPONENTS, filed Jun. 30, 1999.

[0002] The invention pertains to control systems and, more particularly, to methods and apparatus for networking, configuring and operating field devices, controllers, consoles and other control devices.

[0003] The terms “control” and “control systems” refer to the control of a device or system by monitoring one or more of its characteristics. This is ...

Claims

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